package com.seangull.dao.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;

@EnableTransactionManagement
@Configuration
public class MybatisPlusConfiguration {
    @Autowired
    private DataSource dataSource;

    /**
     * 分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        /* 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false */
        // paginationInterceptor.setOverflow(false);
        /* 设置最大单页限制数量，默认 500 条，-1 不受限制 */
        // paginationInterceptor.setLimit(500);
        /* 开启 count 的 join 优化,只针对部分 left join */
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }
}
